Chemistry
Grade-11
Easy
Question
Assertion: HCl is an Arrhenius acid.
Reason: HCl will yield hydronium ions as the only positive ions in the solution.
- Both A and R are true, and R is the correct explanation for A.
- Both A and R are true, but R is not the correct explanation of A.
- A is true, but R is false.
- A is false, but R is true.
The correct answer is: Both A and R are true, and R is the correct explanation for A.
According to Arrhenius theory, acids are the substances (or species) that dissociate (or break) in water to give hydrogen ions H+ (aq). A proton, H+, is highly reactive. So, in an aqueous solution, it cannot exist freely. Therefore, it combines with the oxygen atom of a water molecule (solvent) to give trigonal pyramidal hydronium ion, H3O+.
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